Like CJ says, pay attention when mounting it and listen for the 'click' when you snap in the rear mounting tab, then give it a little tug to make sure it's seated.
Re the horn button hitting the bag ... ya, it does happen on occasion,
but notto thedegree of being bothersome/regular. CJ ... you're just gonna have to plan a little better, a little sooner!
The only time I remove mine is when I'm staying in hotels/motels, so, not that often.
It'll hold my camera, smokes, lighter, sunscreen, snacks, cell phone, MP3 player, I-Touch, rag, spare road maps, the above mentioned blank junction box cover and more.
At 1st I wished it was a little bigger, but after living with it this past year,I think it's just about the right size. I also ordered the additional 'map case' which snaps on and off in a jiffy. I do wish they made a rain cover for it. I thought maybe
a ladies XL shower cap might fit, but that didn't even come close. A buddy of mine ended up getting a new tank bag for his Beemer and he gave me the cover off of his old one. Kinda looks like hell ..... but it works!
Being made of Black Cordura and sitting out in the sun all the time while riding, I gave mine a few treatments of 303 Sun Protectant
, sort of like a high tec sunscreen for material. Nylon breaks down rather quickly due to the harsh UV rays. Still looking good after 40,000k this past summer.
Would I buy one again? ... Yup!